<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

</body>
<script>
	{
		// 1
        async function fn(){

        }
    }
	{
		// 2
        const fn = async function(){

        }
    }
	{
		// 3
        setTimeout(async function(){

        })
        setTimeout(async ()=>{

        })
    }
	{
		// 4
        const obj = {
			async fn(){

            },
            fn2:async function(){

            },
            fn3:async ()=>{

            }
        }
    }
</script>
</html>